Wow, 2 bar should be 900 bhp++....
Do it, do it.....
Boost controller, 1.2 to 2 bar?.....
you are going to need an APS Extreme kit (or something with a bigger set of turbos anyway) for that kind of powers (that's what they run on the 4.2L stroked APS TT EXtreme on NitrouZ's car in the US and they push iro 850bhp, don't know which levels of boost though. The ownesr drives it allegedly every day though, so it can't be too extreme